<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<script>
  function f1() {
    console.log("狗")
  }
  f1();
function f2(name,age){
  console.log(name+":"+age);
}
f2("刘思甜",18);

function f3(){
    return "刘狗";
}
let age=f3();
console.log(age)
function f4(x,y){
    return x*y;
}
let aba=f4(9,9);
console.log(aba);
let f5=function (name,age){
    console.log(name+":"+age);
}
f5("刘思甜",39);
let f6=new Function("name","age","console.log(name+':'+age)");
f6("周扒皮"+66);

</script>
</body>
</html>